Catamaran Boat with Flapping Wings Converted to Step Machine
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Solution Overview
Problem
Existing small boats lack dual functionality as both watercrafts and home fitness equipment, and those with flapping wing propulsion require specific techniques and have learning curves due to lack of flotation devices, leading to instability and sinking issues.
Innovation Solution
A catamaran-configured boat with submerged independent wings actuated by a step simulator mechanism, converting into a gymnastics apparatus by adding dampers, utilizing a simple and robust propulsion system with minimal components, allowing easy operation and conversion between uses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flapping wing propulsion system is used without flotation device, then propulsion efficiency is improved, but stability and safety deteriorate causing the watercraft to sink
Solution Approach 1:
The watercraft is divided into separate functional components: the mainframe with flapping wing propulsion system for efficient propulsion, and detachable flotation devices (foams or tubes) for stability. This segmentation allows each component to optimize its specific function while maintaining overall system reliability.
Solution Approach 2:
The flotation devices serve multiple purposes: providing buoyancy to prevent sinking, enhancing stability during operation, and enabling easy detachment for conversion to gymnastics apparatus. This multi-functionality resolves the contradiction by adding stability without compromising propulsion efficiency.
2Productivity
If flapping wing propulsion system requires specific technique, then propulsion efficiency is improved, but ease of operation deteriorates due to learning curve
Solution Approach 1:
The flapping wing mechanism is designed to be self-regulating through its mechanical linkage system. The pedals are connected to the wings via a mechanism that automatically converts pedaling motion into effective flapping angles, eliminating the need for users to learn complex techniques. The system adapts to natural pedaling patterns while maintaining propulsion efficiency.
3Productivity
If complex propulsion system is used, then propulsion efficiency is improved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates unnecessary complex components from traditional flapping wing systems. By using a simplified pedal-wing direct linkage mechanism and removing redundant transmission elements, the design achieves efficient propulsion with minimal components, reducing maintenance requirements and overall system complexity.
4Adaptability or versatility
If boat structure is designed for dual use, then adaptability is improved, but device complexity increases due to conversion mechanisms
Solution Approach 1:
The boat is designed with detachable flotation devices and modular components that can be easily removed. The mainframe structure remains simple and robust, while the removable parts (flotation devices, seat, handlebar) are separately stored. This segmentation enables straightforward conversion between boat and gymnastics apparatus modes without requiring complex transformation mechanisms.
Solution Approach 2:
Different parts of the structure have optimized properties for their specific functions: the mainframe is designed for structural integrity and propulsion, while the flotation devices are designed for buoyancy and easy attachment/detachment. This local optimization allows dual functionality without adding overall system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a stable, efficient, and intuitive watercraft that can be easily converted into a home fitness device, offering high-speed propulsion without a learning curve, with reduced maintenance and cost due to its mechanical simplicity and use of bicycle parts.
Implementation Method 1
the wing assumes a negative rake angle, so that it generates lift having a component in the direction of motion of the boat
Implementation Method 2
These dampers 15 absorb and dissipate the energy generated during exercising
Implementation Method 3
The present invention uses a catamaran type flotation device
Data Source
AI summary
The present invention relates to a boat propelled by two submerged independent wings actuated by means of a step simulator mechanism that imparts an vertical alternating movement to the wings, which are articulated around a shaft located forward of the center of pressure thereof, such that the wings assume angles of inclination that generates propulsive force in the upward and downward movements. In the analogous position of a conventional bicycle, the driver actuates the footrests while seated. A handlebar, connected to a rudder, is used to maneuver the vehicle. The catamaran configuration offers hydrodynamic efficiency and stability. When disassembled, the mainframe of the boat can be converted into a step machine, simply fitting a pair of dampers to the structure, which absorb and dissipate the energy generated during exercising. Thus, the present invention has a dual use—boat and gymnastics apparatus—and can be transported in the car trunk.